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KBIU ("K-Bayou") seems to have had a few formats after switching from AOR as "Nova 104"
KGRA in 1981. I've found aircheck websites listing them variously as Top-40, Rock 40, Classic Rock and Hot AC. KBIU was located at 103.7 FM and licensed to Lake Charles, Louisiana.
KBIU is currently a Jack FM Adult Hits station at 103.3 FM with the same city of license.